Some people exclusively use essential oils to scent their soaps. I don’t, for a couple of reasons. 1) They are medicinally active and you really need to know what you are doing to use them safely (see this post for more on essential oil safety). 2) They tend to be quite a bit more expensive than fragrance oils and your options are limited by price and availability (there just isn’t an essential oil that smells like coconut or pears, for instance). 3) Often times, the scent tends to fade rather quickly in your bar. That grapefruit essential oil soap that smelled amazing when you cut it six weeks ago? Three months in it now smells like, well, soap. I DO have several all essential oil soap offerings though (Lavender-Lemon, Fresh Lemon, Rosemary Mint and Peppermint, and occasional seasonal mixes like Orange-Patchouli), and am always looking for new combinations to try that won’t break the bank and will hold up over time.

When the “how do I get essential oils to stick in my soap” question comes up in soap making groups, the answer from the soaping brain trust is almost always “use clay to anchor the scent”. I’ve seen it repeated over and over and over in the last 8 years. And so I started asking, has anyone ever done a side by side comparison with and without clay? And the answer was almost always no, or an anecdotal “I can tell the difference”. Read the rest of this entry »